PARTIAL VISIBILITY FOR SELECTING A PARTING DIRECTION IN MOLD AND DIE DESIGN

被引：33

作者：

CHEN, LL

CHOU, SY

WOO, TC

机构：

[1] National Taiwan Institute of Technology, Taipei

[2] University of Washington, Seattle, WA

来源：

JOURNAL OF MANUFACTURING SYSTEMS | 1995年 / 14卷 / 05期

关键词：

INJECTION MOLDING; DIE CASTING; GEOMETRIC MODELING; COMPUTER-AIDED DESIGN; COMPUTER-AIDED MANUFACTURING;

D O I：

10.1016/0278-6125(95)98869-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Selection of an optimal parting direction in mold and die design is considered. Based on the condition for demoldability, two levels of visibility-complete and partial-are defined for a surface. If a surface is completely visible along a certain direction, it can be separated from the mold along the opposite direction. If a surface is not completely visible and therefore cannot be separated from the mold along any direction, it can be decomposed into two portions: those that are separable and those that are undercuts; the former is based on complete visibility and the latter on partial visibility. Algorithms are given for computing the undercut volumes of a polyhedral surface with respect to a particular parting direction and for selecting a parting direction that minimizes the number of undercuts.

引用

页码：319 / 330

页数：12

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